Improved bark-crusher



county,.and State o f New York, haie invented certain lrollers, in such a wayas to cause the upper and tiont Yoverwerk or crowd the i'ont and back rollers in passmade of wood or metal, as circumstances'may require.

G Il, secured on their journals, and propelled by means e @duidt tant (liifire.

BENJAMIN IRVING, OF NEW' YORK, vASSIGNOR TO H. TAYLOR,

OF MALONE,

Letters PctentvNo. 85,172,

N EW YORK.

dated December 22, 186.8.

DVIPRQVED BARK-CRUSHER.

*voorw- The Schedule referred to in these Letters Patent and making part of the same.

To all whmn it may' concer/n Be it known that I, BEsJAMIN IRVING, of the city,

new and useful Improvements in Mechanism for Crushing Bark, for obtaining the extract thereof for tanning and other purposes; and 1 do hereby declare that the following is a full description ofthe same.

rlhe nature ofmy invention consists,

First, in combining and arranging a series of three rollers to hare a dilierential motion, and the front and back rollelsio have a uniform motion, so that the bark, in passing between the upper and front rollers, will not ing between them, as would be the case if the speed of all the rollers were the same. A

Second, in combining, withfthc said sexies ofrollers, a. series of adjustable knives or scrapels fore caring tho surface of the rollers from the dirt or extract of tannin adhering thereto during the crushing-opclation.

rlhird, in combining, with the said series otcrushiugrollers, a waterbath,i1 i such a position, in reference to the rollers, as to receive the bark and extlact discharged from the crusln-r-rollels.

Fourth, in combining, with the said water-bath, a coil of heater-pipes, to heat the water in theI bath.

Fifth, in combining, with `thc said water-lm'rb, a rc- 'volving, agita-ting, or distributiiig-wheel, for marrying the tan-bark to an elevatillg-appalatus.

Sixth, invcombining, with the said water-bath, au endless eleva-tor.

But, to describe my intention more particularly, 1 will refer to the. aewmpan ying dia-wings, forminga part ot'tbs specification, the samelctteis ofrcterence, wlan-eercr they occur, referring to like parts.

Figure 1, sheet 1, is a plan view of the machine.

Figure 2, sheet 2, is a side elevation of the machine.

Letter A is the flame ofthe machine, which may be '01| the frontend of this frame is arranged, in suitable beau-ings, B, a series of three rollers, U, D, and E, of uniform dianletcr,so that the front roller, (l, acts upon the top roller, l), and back roller, E, at the same time, to give thc bark two successive crushingshcibrc itescapes from the rollers. .lhcse rollers are geared together b v` cog-wheels, l"

ofa. large cog-wheel, J, on the opposite end of the axis of the top roller 1).

This roller is geared so as to run faster than the ti'ont roller, while 4the front and back rollers are geared so as to havo a uniform speed. v

The object of this diiierential speed is to crush the bai-rk more thoroughly, and, at the same time, facilitate the delivery of the bark through the series of rollers. Letters K are knives or scrapers, ar angedacross the machine, att-hc lower sides of the rollers, for the purpose offreeing them from dirt and any extract of tannin adhering tu their surlufes.

Letter I. .is a feed-table or hopper, on which the slab of bark is fed into the machine.

Letter M is awatcr-bath, arranged inthe lower-sidey of 'the frame A, so that its front end extends under the crushing-rollers,,and of s uii'ieient-depth back to admit' of the operation ot'an agitating-wheel, N, and elevatorbuckets, l, therein, to resoak the crushed bark,and.

take the same out of thc-bath.

.It is intended to use hot water in the bath, and for the purpose of heatingr the water, a coil of steam-pipes Q, isr arranged in theI bottom of the b ath, or other-suit# able part of it, to h'eat the water readily.

ried up out of the bath as fast as itis fed into it by the crushing-rollers.

For the. purpose ofrotating the.:agitator-wheel, plleys, 1i and Sgn-e attached to the journals of tl,xevback Kcrusher-roller and that-of the agitator-whcel, and, by mea-ns of an endless band, T, the wheel is kept in motion.

Letter U is a roller, secured in suitable bearings'in the upper ends of the elerator- 'ame A", on the outer end ot' which is a pulley, V, which, by means of au en'd-H less belt, running over a pulley, X, on the top crashen" roller shaft, communica-tes l-uotion to the endless chain or band of cle 'autor-buckets 1.`

'.lhese buckets are formed of sieve-wire, or other essential fin' the successful operation of the machine,

tin' the purpose for which it. is used, that the elevation flame should be high enough to admit of a thorough-S' draiuageof thelozulofbark inezwhhucket botox-@reichv.

ing the top of elevator-tranne.

Haring now described my ters Patent of the United States.

wl. 1 claim the combination of the rollels 'O and'D, havinga diiicrential nlotion, with the roller E, haring a unifonn m'otion with the roller (l, arrangedalnl operating substantially as described, and for the purposes set forth. v

2. l also claim, in combination with the water-bath and agitator-wheel, the elevator li, substantially as deserihed,-ahd for the purposes set fort-h.,A A

v B. IltVING.y v

Fuaxknrx Bauleiter,

CHAnnEs LJ luuufrfr.

suit; able open work, of metal orother matflrrial, so as`to admit of the rapid escape of the water, or e.\jt1act 'otv tannin, therefrom, before passing over the roller U, to'. discharge the spent crushed bark from the maclune. llul height to which thc elevator-buckets arezearf '-ried, beibre discharging their contents-is obvious, and, there-tine, becomes a substantial part of the operations of the niachine in leaching the. bark. It, therefore, isl- 'inv'eutiinn I will proceed to set forth what I claim, and desire to secure by .Let-. 

